This product contains 100 pieces, but 10 have been used, so it is being sold with 90 pieces. ★ By sticking this to the rim of the toilet bowl, it prevents urine from leaking from the front of the bowl and soiling the floor. ★ It prevents stains caused by splashing during urination and leaks from gaps. ★ This item reduces the hassle of cleaning the toilet and wiping the floor.